Type: Package
Package: fastpng
Title: Read and Write PNG Files with Configurable Decoder/Encoder
        Options
Version: 0.1.8
Authors@R: c(
    person("Mike", "Cheng", , "mikefc@coolbutuseless.com", role = c("aut", "cre", "cph")),
    person("Randy408", , , "randy408@protonmail.com", role = c("aut", "cph"),
           comment = "Author of bundled libspng"),
    person("The PNG Reference Library Authors", role = c('aut', 'cph')),
    person("Cosmin", "Truta", role = 'cph', comment = 
           "SSE2 optimised filter functions, NEON optimised filter functions, NEON optimised palette expansion functions"),
    person("Glenn", "Randers-Pehrson", role = 'cph', comment = 
           "SSE2 optimised filter functions"),
    person("Andreas", "Dilger", role = 'cph'),
    person("Guy Eric", "Schalnat", role = 'cph'),
    person("Mike", "Klein", role = "ctb", comment = "SSE2 optimised filter functions"),
    person("Matt", "Sarett", role = "ctb", comment = "SSE2 optimised filter functions"),
    person("James", "Yu", email = "james.yu@linaro.org", role = "ctb", 
           comment = "NEON optimised filter functions"),
    person("Mars", "Rullgard", role = "ctb", comment = "NEON optimised filter functions"),
    person("Arm Holdings", role = "cph", comment = "NEON optimised palette expansion functions"),
    person("Richard", "Townsend", role = c('ctb'), email = "Richard.Townsend@arm.com", 
           comment = "NEON optimised palette expansion functions")
  )
Maintainer: Mike Cheng <mikefc@coolbutuseless.com>
Description: Read and write PNG images with arrays, rasters, native
        rasters, numeric arrays, integer arrays, raw vectors and
        indexed values.  This PNG encoder exposes configurable internal
        options enabling the user to select a speed-size tradeoff.  For
        example, disabling compression can speed up writing PNG by a
        factor of 50. Multiple image formats are supported including
        raster, native rasters, and integer and numeric arrays at color
        depths of 1, 2, 3 or 4. 16-bit images are also supported. This
        implementation uses the 'libspng' 'C' library which is
        available from <https://github.com/randy408/libspng/>.
License: MIT + file LICENSE
URL: https://github.com/coolbutuseless/fastpng
BugReports: https://github.com/coolbutuseless/fastpng/issues
LinkingTo: colorfast
Imports: colorfast (>= 1.0.1)
Depends: R (>= 2.10)
Suggests: knitr, png, rmarkdown, testthat (>= 3.0.0)
VignetteBuilder: knitr
Config/testthat/edition: 3
Copyright: The included 'libspng' code is Copyright (c) 2018-2023,
        Randy <randy408@protonmail.com>. Sections within the 'libspng'
        code are derived from 'libpng' and copyright attributed to
        those authors. See 'COPYRIGHTS' for license information and
        full attribution of all copyrighted sections of code.
Encoding: UTF-8
Language: en-AU
LazyData: true
LazyDataCompression: xz
RoxygenNote: 7.3.3
Repository: https://coolbutuseless.r-universe.dev
Date/Publication: 2026-02-28 00:13:08 UTC
RemoteUrl: https://github.com/coolbutuseless/fastpng
RemoteRef: HEAD
RemoteSha: ab36a1693f99e51bd68a2eede136c4d4a436fac9
NeedsCompilation: yes
Packaged: 2026-06-24 00:46:00 UTC; root
Author: Mike Cheng [aut, cre, cph],
  Randy408 [aut, cph] (Author of bundled libspng),
  The PNG Reference Library Authors [aut, cph],
  Cosmin Truta [cph] (SSE2 optimised filter functions, NEON optimised
    filter functions, NEON optimised palette expansion functions),
  Glenn Randers-Pehrson [cph] (SSE2 optimised filter functions),
  Andreas Dilger [cph],
  Guy Eric Schalnat [cph],
  Mike Klein [ctb] (SSE2 optimised filter functions),
  Matt Sarett [ctb] (SSE2 optimised filter functions),
  James Yu [ctb] (NEON optimised filter functions),
  Mars Rullgard [ctb] (NEON optimised filter functions),
  Arm Holdings [cph] (NEON optimised palette expansion functions),
  Richard Townsend [ctb] (NEON optimised palette expansion functions)